flying-scripts / inject-js.php

inject-js.php in Flying Scripts: Delay JavaScript to Improve Site Speed & Performance 1.2.4, at inject-js.php

12 lines 900 B

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1	<?php
2
3	function flying_scripts_inject_js() {
4
5	$timeout = esc_attr(get_option('flying_scripts_timeout'));
6	?>
7	<script type="text/javascript" id="flying-scripts">const loadScriptsTimer=setTimeout(loadScripts,<?php echo $timeout ?>*1000);const userInteractionEvents=['click', 'mousemove', 'keydown', 'touchstart', 'touchmove', 'wheel'];userInteractionEvents.forEach(function(event){window.addEventListener(event,triggerScriptLoader,{passive:!0})});function triggerScriptLoader(){loadScripts();clearTimeout(loadScriptsTimer);userInteractionEvents.forEach(function(event){window.removeEventListener(event,triggerScriptLoader,{passive:!0})})}
8	function loadScripts(){document.querySelectorAll("script[data-type='lazy']").forEach(function(elem){elem.setAttribute("src",elem.getAttribute("data-src"))})}</script>
9	<?php
10	}
11
12	add_action( 'wp_print_footer_scripts', 'flying_scripts_inject_js');